baber/WOPTO huggingface dataset:
Patent GB-916898-A (GB)
Title: High pressure filter
IPC: B01D29/00
Filed: 1961-09-21
Abstract: 916,898. Filters. MILLIPORE FILTER CORPORATION. Sept. 21, 1961 [Sept. 28, 1960], No. 33761/61. Class 46. A method of manufacturing a plastic, e.g. cellulose ester, filter 3 loosely supported on a perforated supporting tube 1 comprises dipping the tube into, or spraying it externally with, paraffin wax to form a thin coating 2 thereon, allowing the paraffin wax to solidify, dipping the tube into microporous plastic material and rotating it during and after insertion to form a hard plastic film 3 thereon of 50-140 microns thickness, humidifying and drying the film to form a solid microporous structure of pore size of less than 10 microns, e.g. about 10 millimicrons, and then removing the paraffin coating by melting it or by dissolving it in a solvent, e.g. xylene. In a cartridge assembly comprising a plurality of tubes in parallel, the tubes abut a discharge conduit at one end, and the other ends of the tubes are sealed in a resin potting compound in a cap; the cartridge is immersed in a suitable pressure vessel.
Patent GB-467096-A (GB)
Title: Improvements in or relating to pneumatic tyres for vehicle wheels
IPC: B60C23/12
Filed: 1935-12-07
Abstract: 467,096. Pneumatic tyres. STEVENSON, A. C. Dec. 7, 1935, No. 33934. [Class 144 (ii)] [Also in Group XXVIII] Means for automatically inflating pneumatic tyres whilst running comprise one or more reciprocating pumps carried by the wheel and operated, against spring resistance, by alteration of centrifugal forces due to variation of speed of the vehicle. The pumping-devices may be housed in a hollow wheel structure forming a chamber in communication with the tyre ; and, an additional pumping-device may be fitted for actuation by the flexing of the tyre in road-contact. In the form shown in Fig. 2, a cylinder 14 carried by a movable block 1 cooperates with a fixed piston 2 which is fitted with a lubricating-bush 12 and is screwed into a bracket 3 clamped to the wheel. The block 1 is fitted with inlet and blow-off valves 16, 17 respectively, an inlet valve 19 being fitted at the inner end of a bore 18 in the piston which communicates through pipe 20 with the airchamber of the tyre. A helical spring 15 is fitted between the piston and the cylinder-block 1 to force the latter towards the wheel-centre. A dust-excluding cover 21 may be fitted as shown. With the parts in the position shown, if the speed of rotation of the wheel decreases, the spring 15 overcomes the centrifugal thrust of the block 1 and air is drawn into the cylinder 14, to be forced past the valve 19 into the tyre on subsequent acceleration of the wheel. For balancing purposes, a second pumping-device, or an appropriate weight, may be fitted at the diametrically-opposite side of the wheel. In a modification, a device such as that shown in Fig. 2 is fitted directly on the valve-stem of the tyre. Figs. 7 and 8 show a modification in which the wheel body, of the kind described in Specification 380,163, constitutes an air-chamber 50 and the tyre 54 encloses an emergency load-supporting rim 53. Valve-controlled openings 58, 59 connect the chamber 50 with the atmosphere and the tyre respectively, and a pair of pistons 57 normally retracted by springs 61 operate in diametrically-opposed cylinders 55. Fig. 11 shows a further modification in which the centrifugally-actuated pump is combined with a pump actuated by the flexing of the tyre in road contact. In this form, the outward throw of the piston 72 and sleeve 75 due to centrifugal force, against the resistance of the spring 76, draws air into the cylinder 71 through the valve 79, 80 being a blow-off valve. On decrease in speed of the wheel, the piston 72 is retracted thereby forcing air trapped in cylinder 71 past valve 81 into cylinder 73 and through bore 82 of piston 74 into the tyre. The piston 74 is rigidly secured to the casing 75 whereby on undue flattening of the tyre under load the parts 74, 75, 72 are moved radially inwards to force air from the cylinder 71 into the tyre. A grub-screw 83 is fitted to limit the movement of the piston 74 in its cylinder 73, and a buffer-spring 78 is provided to cushion the travel of the sleeve 75 after the piston 72 has reached the end of cylinder 71.
Patent GB-1363625-A (GB)
Title: Suspensions of hydrophobic starch derivatives
Inventor: BERKHOUT F
IPC: C08B31/02
Filed: 1970-07-14
Abstract: 1363625 Starch ester dispersion SCHOLTEN-HONIG RESEARCH NV 13 July 1971 [14 July 1970] 33991/70 Heading B1V [Also in Division C3] A stable colloidal aqueous suspension of hydrophobic starch esters comprising 1-50% based on the weight of the suspension of particles of hydrophobic starch esters having an average weight size of from 0.1 to 1.0 microns suspended in water, the hydrophobic starch containing ether groups, e.g. benzoyl or phenyl carbamate ester, in an amount corresponding to a DS of 0.1 to 1.0 the ester groups being aliphatic groups of 3-17 carbon atoms and/or aromatic groups of 6-12 carbon atoms is obtained by heating a granular hydrophobic starch ester of DS 0.1 to 1.0 in such an amount of water under superatmospheric pressure as to produce an aqueous suspension of 1-50% based on the weight of the suspension of hydrophobic starch particles of average weight size 0.1 to 1.0 micron.
Patent GB-1138097-A (GB)
Title: Electrical circuit breaker
IPC: H01H73/30
Filed: 1967-07-25
Abstract: 1,138,097. Automatic circuit - breakers. MECHANICAL PRODUCTS Inc. 25 July, 1967 [4 May, 1967], No. 34074/67. Heading H1N. A circuit-breaker 10 includes a current responsive bimetal 74 having one end 84 fixed in a seat 86 and the other end 88 biased against a stop 92 by a spring 90, the centre portion of the bimetal 74 flexing upon overload to draw a slide 72 leftwards (as shown), disengaging its end 78 from a latch 80 and allowing a contact carrier 50 to move downwardly (as shown) and disengage contacts 56, 58, and a manual operator 20 is pushed upwardly to reset the breaker. The operator 20 may be pulled downwardly to open the breaker, a cam surface 104 on stem 30 of the operator moving the slide 72 leftwards by a roller 106 thereon. A magnetic trip device 118 comprising a core 120 and coil 122 thereon is also provided, and coil 122 can function as a heater to speed up the thermal response of the bimetal 74. Latch 80 is secured to an ambient temperature compensating bimetal 82 which has a calibration screw 100. The spring 40, biasing operator 20 downwardly, is not strong enough to move the slide 72. Spring 60 biases contact carrier 50 downwardly to open contacts 56, 58, when the carrier is released from latch 80. U.S. Specification 3,287,523 has many similarities.
Patent GB-1195908-A (GB)
Title: Wear Control Design for Piston Rings and Rod Packings.
IPC: F04B39/04
Filed: 1967-07-25
Abstract: 1,195,908. Piston rings; seals. JOY MFG. CO. 25 July, 1967 [25 July, 1966], No. 34187/67. Headings F2B and F2T. The segments of carbon or P.T.F.E. packing rings for a compressor piston or rod are each provided with a passageway 38, Fig. 2, which is spaced from the sealing peripheral surface and allows the gas to flow past the ring through the passageway when the peripheral surface has been worn down to meet the passageway. The passageways may take the form of bores 38 for passing the gas directly through the ring or of radial grooves 44, Fig. 4, for passing the gas along the sides and around the back of the ring, Fig. 6, the arrangement allowing the gas to pass to the next ring or produce leakage to indicate that the packing is worn. The grooves may be stepped, Fig. 8 (not shown), or a series of bores provided at different radii so that the load is transferred gradually to the next ring. Garter springs are employed when the packing is used for the rod.
Patent GB-525547-A (GB)
Title: Method and apparatus for evaporation and heat treatment of liquids and sludgy materials
IPC: C13B25/00
Filed: 1938-11-24
Abstract: 525,547. Evaporating liquids such as syrup. CLEVELAND, F. J. (Charms Co.). Nov. 24, 1938,No. 34267. [Class 32] A method of evaporation and heat treatment of liquids, such as syrup, consists in establishing, in an evaporator chamber, a mass of syrup having small depth and extended surface, raising the temperature of the mass, and then reducing the pressure above the mass to remove vaporized moisture therefrom, so as to cool the mass, through an outlet which extends to a considerable height above the vessel so as to prevent loss of material through the outlet. The apparatus shown in Figs. 1 and 6, for carrying out the method of the invention, comprises an elongated horizontal casing 1, provided with swinging gates 6 at the ends. A steam jacket 5 surrounds the lower part only of the casing 1. Syrup is supplied through the line 9, and water may be supplied through the line 10 for washing out the casing when the apparatus is not in operation. Steam, supplied by the line 12, enters each end of the jacket 5, through the valve 13, and also passes to a steam ejector 15, discharging through an exhaust pipe 16. A vertical stack or flue 4, of considerable length, is connected with a condenser 18 through the conduit 17 provided with a valve 19, and pressure within the condenser 18 and casing 1 can be reduced by the ejector 15, when operated through the valve 13<SP>1</SP>. 24 and 33 are pressure guages. The stack 4 can be opened to atmosphere through the pipe 25, by operating the valve 26. The cross section of the casing 1 is dome-shaped, the bottom being flat or of great radius, so that the syrup under treatment has small depth but extended surface. The gates 6 are held tightly against gate rings 37 by hooks 48 during treatment of the syrup, and the charge, after treatment, is run out on to cooling tables 52. Samples may be withdrawn from the batch during treatment by means of a pipe 87 provided with two valves 88, 89. Slidable pans 67 are pulled outwards, to catch wash-water, when the casing is being washed out. In the modified form shown in Figs. 8, 9 and 10, the casing 1 is circular in cross section, two semicylindrical steam jackets 5a, 5b are provided, and the syrup is spread, as a film, around the interior of the casing by a longitudinally extending rotatable agitator comprising members 96 and scrapers 105, connected to cross-arms 92, and so shaped as to cause a gradual flow of syrup longitudinally of the casing. When the end gates are to be opened, the driving-gear-carrying arms 127 are swung upwards, about the power shaft 129, to clear the agitator shafts 94.
Patent GB-1081739-A (GB)
Title: Disposal of waste liquors and recovery of inorganic chemicals therefrom
Inventor: COPELAND GEORGE GARNET
IPC: F23G7/04
Filed: 1966-07-29
Abstract: 1,081,739. Disposal of waste liquors by evaporation. CONTAINER CORPORATION OF AMERICA. July 29, 1966, No. 34277/66. Heading BIB. Inorganic material is recovered from waste liquor containing organic and inorganic material, e.g. waste wood pulping liquor, by spraying the liquor, supplied from tank 17, through pneumatic device 3 into a vessel 1 which contains a bed 14 of solid particles maintained in a fluidized state by supplying oxygen-containing gas, e.g. air, into the lower part of the vessel through an orifice plate. The temperature of the bed is maintained above the combustion temperature of the organic material in the liquor but below the melting temperature of the inorganic components, usually at a temperature between 1000‹ and 1800‹F. Some evaporation of the liquor takes place in the freeboard space 24, where the temperature is less than 1000‹F., and the partially-concentrated liquor is deposited as a thin layer on the fluidized particles where the remainder of water is evaporated and the combustion of the organic material takes place. The solid particles of bed 14 preferably comprise the inorganic material derived from the process, but silica grains may also be used. Bed 14 is maintained at the desired height by discharging dry granular material through valve 6 to screenclassifier 7. Fine solids are recycled to the bed through conduit 38. If necessary, the coarse solids can be treated to separate a desired product, e.g. sodium sulphate, from inert material. The waste liquor is preferably concentrated to about 35% by weight solids, e.g. by multiple effect evaporation, before it is introduced into vessel 1. Exhaust gases and water-vapour flow from vessel 1 to cyclone 4, where entrained solid particles are separated and then recycled to bed 14 via screw 5. In order to remove fine solid particles, the exhaust gases are scrubbed with dilute liquor in system 8, before being discharged through conduit 29 to the atmosphere, either directly or through an SO 2  - removal tower. The scrubbing liquid collected in sump 35 is pumped through conduit 37 to tank 17 or to scrubbing system 8. The preconcentrated liquor is preferably introduced into vessel 1 partly as fine spray and partly as coarse spray; this may be achieved by an adjustable feed gun or by employing two feed guns. Atomizing devices 25 and 26 are provided to introduce water or weak liquor into the freeboard space 24 in order to maintain the temperature of this space at 350‹ - 600‹F. The fluidizing air is blown through preheater 2 before it is supplied through conduit 12 to the bed 14. If necessary, extraneous fuel in the form of natural gas, fuel oil or coke may be added to the fluidized bed. Examples are given which relate to the disposal of waste sodium sulphite (black) liquor and of magnesium bisulphite (red) liquor.
Patent GB-1081451-A (GB)
Title: Mechanically operated reciprocating conveyors
IPC: B65G27/00
Filed: 1964-08-21
Abstract: 1,081,451. Jigging conveyers. ALLEN-HARPER Inc. Aug. 21, 1964 [Aug. 21, 1963], No. 34321/64. Heading B8A. A reciprocating conveyer comprises a conveyer bed and a low frequency drive therefor characterized by slow advancement of the bed at the start of the feed stroke and abrupt stopping at the end of the feed stroke to toss forward material being conveyed. Fig. 1 shows a conveyer bed 10 mounted on rollers 12 and reciprocated by a drive 16 including an electric motor 18 driving a flywheel 22 carrying a crank arm 28 with a sprocket 30 engaging a chain 40 attached at one end to a fixed pin 46 and at the other end to the conveyer bed 10. The chain 40 is kept taut by the action of a spring 48 urging the conveyer bed 10 to the right. Fig. 5 depicts the action of the drive as the crank arm 28 is rotated, the static frictional engagement between material 32 and the conveyer bed 10 being broken by the abrupt reversal between the feeding and retraction resulting in tossing or throwing the material forward. Fig. 6 shows a drive incorporating elliptical gears 74, 76 to maximize the throwing or tossing action.
Patent GB-1268007-A (GB)
Title: Electronic timepieces
IPC: G04C3/00
Filed: 1969-07-08
Abstract: 1,268,007. Electric timepieces. SOC: SUISSE POUR L'INDUSTRIE HORLOGERS SA. July 8, 1969 [July 9, 1968], No.34334/69. Heading G3T. ' An electric timepiece comprises an electronic circuit ER which produces periodic signals of a predetermined frequency and an electro-chemical transducer for driving a time indicating device, the transducer being controlled by the signals and including an armature 1 which oscillates between two limiting stops 13, 14 at the frequency of the signals to supply electric impacts to the teeth 15 of a seconds wheel S. A crystal controlled oscillator B produces a high frequency signal which is fed to a scaler D where it is divided down to a frequency of one Hz. The armature 1 is mounted on a spindle 2 and has an extension which supports a coil 10 movable in the gap between opposed, U-shaped permanent magnets each having pole pieces 11a, 11b. The coil is connected to the circuit ER via the spindle 2 and a pair of spiral springs, one of which 7 is shown. The signals fed to the coil cause it to oscillate and pallets 1a, 1 therefore alternately strike the teeth 15 of the seconds wheel S to intermittently rotate the wheel. An arm 9 is mounted on the spindle 2 and its engagement with the stops 13, 14 limits the swing of the armature. A differentiating circuit may be added to the circuit ER to supply pairs of pulses of opposed polarity thus accelerating the withdrawal of the pallet la from between the teeth to prevent it being struck by a following tooth as the wheel S rotates. A similar effect may be achieved by alternatively cutting an additional surface on the pallet 1a at right angles to its impact applying surface.
Patent GB-773232-A (GB)
Title: Improvements relating to the construction of railway vehicles
Inventor: WHYMAN FRANK
IPC: B61F5/24
Filed: 1954-11-26
Abstract: 773,232. Mounting bodies on railway vehicles. METROPOLITAN-VICKERS ELECTRICAL CO., Ltd. Nov. 8, 1955 [Nov. 26, 1954], No. 34377/54. Class 103(6). A railway vehicle of the kind having one or more wheel bogies pivotable relatively to the vehicle body about a vertical axis and arranged for the application of tractive or braking effort to at least one wheel axle, has between the body or main frame of the vehicle and a point adjacent an end of the bogie coupling means, shown as a vertical link 13, which operates to prevent or reduce vertical movement of the end of the bogie with respect to the body or frame while at the same time permitting effective pivotal movement of the bogie about a vertical axis. The link 13 may be connected at one end to the main frame 2 by a transverse pivot pin 14 provided with a resilient bush 15, and connected at the other to a lug 16 on the bogie frame 2 by a transverse pivot pin 17 provided with a spherical resilient bush 18. The wheels 9 are provided with leaf springs 8 connected at each end to a vertical link 10 which is connected to the lower end of a helical spring 11. The spring 11 at its upper end is connected either to the bogie frame or to a compensating beam 12, the beams 12 extending between adjacent springs 11 and being pivoted at their centres C to the bogie frame. The vehicle body is suspended from the bogie by swing links as described in Specification 626,798. Specification 641,123 also is referred to.
Patent GB-521853-A (GB)
Title: Apparatus for the reversal of pictures by an electrical process
IPC: G03B27/52
Filed: 1938-11-26
Abstract: 521,853. Local copying by scanning. I. G. FARBENINDUSTRIE AKT.-GES. Nov. 26, 1938, No. 34482. Convention date, Nov. 29, 1937. [Class 40 (iii)] Apparatus for the reversal of pictures comprises a cathode-ray tube B, Fig. 1, the light from the screen F passing through the negative film N, thereby scanning it point by point, to a photo-cell Z which controls by means of the device R and amplifier V the intensity of, or the speed of scanning by, the cathode ray beam so that the quantity of light falling on the cell Z from all points of the picture is substantially the same, a positive of the negative N.appearing on the screen F. The control device R comprises a bridge circuit Z, r<SP>1</SP>, r<SP>2</SP>, rv, Fig. 2. arranged to control the grid-cathode potential in accordance with the light incident on the cell Z. To adjust the gradation of the reversed picture the resistance rv, or a suitable part in the amplifier V, is made variable, or an interchangeable screen may be placed between the negative N and the cell Z. Alternatively the cell Z may be arranged to control the frequency of the time base circuit KG, thus influencing the speed of line scanning.
Patent GB-1334470-A (GB)
Title: Fluorescent lamps
IPC: H01J61/44
Filed: 1972-07-25
Abstract: 1334470 Fluorescent discharge lamps WESTINGHOUSE ELECTRIC CORP 25 July 1972 [10 Sept 1971] 34659/72 Addition to 1293717 Heading H1D [Also in Division C4] A fluorescent lamp with a small charge of Hg and inert gas has a phosphor coating of a blend of three different phosphors, the first having an emission peak at 610 nm to 650 nm and a broad band emission of bandwidth >100 nm at 50% intensity, a second phosphor comprising a blue halophosphate and having an emission peak at 435 nm to 500 nm (e.g. 480 nm) and a broad band emission of bandwidth of >100 nm (e.g. 127 nm) at 50% intensity and the third phosphor having an emission peak at 510 nm to 540 nm and a narrow band emission of bandwidth <50 nm at 50% intensity, the narrow band emission of the third phosphor causing the colour of green objects to be accentuated with respect to their natural green colour while the coupling of all the emissions provides accurate rendition of all other objects. The first phosphor may be at least one of Sn activated Sr-Mg orthophosphate, peaking at 630 nm, and 135 nm bandwidth, and stannous Sr activated Sr-Zn orthophosphate and the third phosphor is at least one of Mn activated Zn silicate, peaking at 530 nm and 45 nm bandwidth, and Mn activated Zn-Mg silico-germanate peaking at 535 nm and 45 nm bandwidth. The first, second, third phosphors may be in respective wt. per cent of 58 to 68% wt, (e.g. 63); 24 to 34% wt. (e.g. 29), 6 to 11% wt. (e.g. 8) and relative wt. proportions of 63 : 29 : 8 being exemplified. The second phosphor may also comprise calcium tungstate peaking at 440 nm and 125 nm bandwidth, and the tungstate and blue halophosphate may be in equal proportions. Instanced is a mix of 66% by wt. Sr-Mg orthophosphate, 10% zinc silicate, 12% calcium tungstate, and 12% of blue halophosphate. Small amounts of other phosphors may be included e.g. 2% by wt. of any known long or short wavelength emitting phosphor. Fig. 1 (not shown) includes Hg charge (26) and a starting gas such as Ar at 3 tons pressure. The second phosphor with the preferred emission above may be calcium pyrophosphate, carbonate, fluoride, cadmium oxide and antimony in disclosed proportions heated in a covered crucible at 1200 C., the product crushed, washed with dilute solution of nitric acid, water rinsed and dried. Starting mixes of other phosphors are described and Sr-Mg orthophosphate : Sn prepared by firing in a slightly reducing atmosphere (e.g. nitrogen with 2% hydrogen) at 1200 C. Zn silicate : Mn is prepared using plumbous fluoride and arsenic trioxide and firing in air at 1300 C. The preparation of calcium tungstate is described using lead oxide and firing at 1100 C. in air. The silico-germanate is prepared by a double firing in air and nitrogen, arsenic trioxide and lead oxide being in the final mix.
Patent GB-1223046-A (GB)
Title: Improvements relating to cooling systems for electricity generating equipment
Inventor: DABELL ARTHUR CEDRIC
IPC: F02B3/06
Filed: 1968-07-20
Abstract: 1,223,046. Cooling I.C. engines. PELAPONE Ltd. July 8, 1969 [July 20, 1968], No.34750/68. Heading F1B. In electricity generating equipment an engine driving a generator are both arranged in an enclosure from which warm air passes through an outlet duct 36, Fig.2, the engine exhaust gases issue in the region of a Venturi restriction 34 in the outlet duct so that the exhaust gases will promote a flow of air in the outlet duct. The engine and generator may be arranged in separate compartments each of which have air intakes and outlets. The air intakes may incorporate air filters. The equipment may comprise a dust-tight enclosure over a mounting frame. The relative positions of the nozzle end relative to the Venturi throat may be adjusted. The generator may be an alternator.
Patent GB-290931-A (GB)
Title: Improvements in or relating to gaiters or sheaths for vehicle springs
IPC: F16F1/24
Filed: 1927-12-23
Abstract: 290,931. Beaumont, G., F., and Beaumont, C. G. Dec. 23,1927. Gaiters for laminated springs 4 constructed of sheet metal or like material consist of a trough having slit or slotted sides to facilitate variations of shape and a plain cover 2 therefor. The slips 3 may be arranged to overlap and may be combined at their lower ends with further slits 3<a> extending longitudinally to give flexibility to the trough. Absorbent material, such as felt may enclose the spring and the trough may be held in position by cross strips 6.